arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2412.13636cs.CVcs.AI

跨多个层级的组合泛化一致性

Consistency of Compositional Generalization across Multiple Levels

Beijing Institute of Technology(北京理工大学);Shenzhen MSU-BIT University(深圳北理莫斯科大学);Zhejiang University(浙江大学)

Chuanhao Li, Zhen Li, Chenchen Jing, Xiaomeng Fan, Wenbo Ye, Yuwei Wu, Yunde Jia

AI总结:

针对跨多个新组合层级的组合泛化一致性问题,提出基于元学习的框架,通过多级优化由简到繁逐步学习组合,并构建GQA-CCG数据集验证了其有效性。

摘要:

组合泛化是指模型理解由已知概念组成的新组合的能力。新组合存在多个层级,包括短语-短语层级、短语-词层级和词-词层级。现有方法取得了有前景的组合泛化效果,但跨多个新组合层级的组合泛化一致性仍未被探索。这种一致性是指模型应泛化到短语-短语层级的新组合,以及能同时从中推导出的短语-词/词-词层级的新组合。在本文中,我们提出了一个基于元学习的框架,以实现跨多个层级的一致组合泛化。基本思想是为实现一致性而由简到繁地逐步学习组合。具体而言,我们根据组合复杂度将原始训练集划分为多个验证集,并引入多个meta-weight-nets为不同验证集中的样本生成样本权重。为了按组合复杂度递增的顺序拟合验证集,我们以多级优化的方式独立且顺序地优化每个meta-weight-net的参数。我们构建了GQA-CCG数据集来定量评估一致性。在视觉问答和时序视频定位上的实验结果证明了所提框架的有效性。我们在https://github.com/NeverMoreLCH/CCG发布GQA-CCG。

英文摘要:

Compositional generalization is the capability of a model to understand novel compositions composed of seen concepts. There are multiple levels of novel compositions including phrase-phrase level, phrase-word level, and word-word level. Existing methods achieve promising compositional generalization, but the consistency of compositional generalization across multiple levels of novel compositions remains unexplored. The consistency refers to that a model should generalize to a phrase-phrase level novel composition, and phrase-word/word-word level novel compositions that can be derived from it simultaneously. In this paper, we propose a meta-learning based framework, for achieving consistent compositional generalization across multiple levels. The basic idea is to progressively learn compositions from simple to complex for consistency. Specifically, we divide the original training set into multiple validation sets based on compositional complexity, and introduce multiple meta-weight-nets to generate sample weights for samples in different validation sets. To fit the validation sets in order of increasing compositional complexity, we optimize the parameters of each meta-weight-net independently and sequentially in a multilevel optimization manner. We build a GQA-CCG dataset to quantitatively evaluate the consistency. Experimental results on visual question answering and temporal video grounding, demonstrate the effectiveness of the proposed framework. We release GQA-CCG at https://github.com/NeverMoreLCH/CCG.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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